phase error for gd3000

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phase error for gd3000

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Contributor III

 I got "phase error" while i tred to run  a bldc witch runs at above 35000 N,i measure the PWM IN wave for gd3000 and PWM out from GD3000 ,i fount the out put from GD3000 for upper  mosfet is wrong which combines the PWM for  lower  MOSFET,it is real strange. for detail ,please see the atatchment.

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NXP TechSupport
NXP TechSupport

Please also post your schematic here.

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Contributor III

my customer used the MOTORGD FRDM board ,he connect his STM32F429 evk  board and the MOTORGD with some Dupont Lines.the attachment is the  MOTORGD  sch. he cut the PCB trace between the two pins of J15 ,so he can drive his 24V BLDC motor , the 5V power supplier is power by the STM32F429 board .

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NXP TechSupport
NXP TechSupport

如果是速度慢下来以后还会有这种错误发生吗?

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